On Fri, Dec 7, 2012 at 1:54 PM, Francis Joanis <francis.joanis@gmail.com> wrote:

Hi guys,

I started playing with FreeSWITCH to make conferences and I was curious about the support for RFC 4579 (Call Control - Conferencing for User Agents).

I was able to have FreeSWITCH return a ;isfocus parameter in the Contact (from the 200 OK) and I tried to add a new participant to the conference using a REFER (see RFC 4579 section 5.5), which generated the following log:

[ERR] sofia.c:7095 Cannot Blind Transfer 1 Legged calls

I think RFC 4579 is mentioned on the FS wiki as a "supported" RFC but is this call flow currently supported?

Cheers and thanks for the awesome work in FS,
Francis

After digging through the code I realized my test is probably invalid since I was reusing the same SIP dialog for the REFER as the one that already existed for the existing call. I'll retest with a true out of dialog REFER and post my results back...